CN106247955A - A kind of line slideway accuracy test device and measuring method - Google Patents
A kind of line slideway accuracy test device and measuring method Download PDFInfo
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- CN106247955A CN106247955A CN201610651529.9A CN201610651529A CN106247955A CN 106247955 A CN106247955 A CN 106247955A CN 201610651529 A CN201610651529 A CN 201610651529A CN 106247955 A CN106247955 A CN 106247955A
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- straight line
- slide unit
- line slide
- displacement sensor
- hydraulic cylinder
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/02—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness
- G01B11/03—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness by measuring coordinates of points
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/02—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness
- G01B11/06—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness for measuring thickness ; e.g. of sheet material
- G01B11/0608—Height gauges
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/24—Measuring arrangements characterised by the use of optical techniques for measuring contours or curvatures
- G01B11/255—Measuring arrangements characterised by the use of optical techniques for measuring contours or curvatures for measuring radius of curvature
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/26—Measuring arrangements characterised by the use of optical techniques for measuring angles or tapers; for testing the alignment of axes
- G01B11/27—Measuring arrangements characterised by the use of optical techniques for measuring angles or tapers; for testing the alignment of axes for testing the alignment of axes
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Length Measuring Devices By Optical Means (AREA)
- Length Measuring Devices With Unspecified Measuring Means (AREA)
Abstract
The invention discloses a kind of line slideway accuracy measuring device and method thereof, described device includes frame, platform is set in frame, Z axis straight line slide unit it is provided with on platform, bi-directional synchronization straight line slide unit is fixedly mounted by keyset on Z axis straight line slide unit, described Z axis straight line slide unit and bi-directional synchronization straight line slide unit are mutually perpendicular to, a pair laser displacement sensor it is symmetrical arranged on bi-directional synchronization straight line, it is respectively the first laser displacement sensor and the second laser displacement sensor, described Z axis straight line slide unit side fixedly mounts displacement transducer by bracing frame, institute's displacement sensors perpendicular alignmnet platform, first installing rack and the second installing rack are set in the middle of described platform, described first installing rack and the second installing rack are symmetrical about Z axis straight line slide unit.The measurement apparatus simple in construction of the present invention, reduces space utilization greatly, and without carrying out loaded down with trivial details fastening work, is especially suitable for Aulomatizeted Detect demand.
Description
Technical field
The present invention relates to field of measuring technique, particularly a kind of novel linear guide precision test device and measuring method.
Background technology
At present, rolling linear guide measure of precision uses hand dipping or touch sensor to measure mostly, manual
When measuring the guide rail raceway depth of parallelism, by guide rail clamping on the fixture measuring flat board, by gauge stand and rail-sides datum level and guide rail
Mounting plane aligns, and gauge outfit is directed on guide rail roller surface, then moves gauge stand and measures, the maximum and minimum value of measurement
Difference be guide rail raceway parallelism error, the method needs loaded down with trivial details clamping work, high to laboratory technician's competency profiling and survey
Amount result poor repeatability；Chinese invention publication number CN103438839A, entitled: a kind of line slideway precision self-operated measuring unit
And measuring method, the patent describing use noncontacting proximity sensor and measure guide precision, this sensor is to pass in contact
Pneumatic component has been installed additional so that it is during inoperative, do not contact testee, during measurement, installed this kind of sensor additional on sensor
Standard slider moves at certain intervals, it is achieved to tested guide rail height and the measurement of the depth of parallelism, the method measures different model
Need to make corresponding standard rail and standard slider during guide rail, increase Financial cost and maintenance cost.
In sum, the measure the item that the various guide precision measuring instruments that present stage uses cover is few, in particular for
The measurement of raceway phase closing precision is less, measures efficiency and all has much room for improvement with certainty of measurement, repeatability.
Summary of the invention
It is an object of the invention to provide a kind of novel linear guide precision test devices and methods therefor.
The technical solution realizing the object of the invention is: a kind of line slideway accuracy test device, including frame, frame
On platform is set, platform is provided with Z axis straight line slide unit, on Z axis straight line slide unit by keyset fixed installation bi-directional synchronization straight
Line slide unit, described Z axis straight line slide unit and bi-directional synchronization straight line slide unit are mutually perpendicular to, and bi-directional synchronization straight line is symmetrical arranged a pair and swashs
Optical displacement sensor, the respectively first laser displacement sensor and the second laser displacement sensor, described Z axis straight line slide unit side
Fixedly mount displacement transducer, institute's displacement sensors perpendicular alignmnet platform by bracing frame, in the middle of described platform, arrange first
Installing rack and the second installing rack, described first installing rack and the second installing rack are symmetrical about Z axis straight line slide unit, on the first installing rack
Be connected the first hydraulic cylinder, and the end of the first hydraulic cylinder arranges the first end face briquetting, and described second installing rack is connected the second hydraulic pressure
Cylinder, the end of the second hydraulic cylinder arranges the second end face briquetting；
Both sides, described platform front arrange the first installing plate and the second installing plate, and above-mentioned two installing plate is about Z axis straight line
Slide unit is symmetrical, and be wherein connected on the first installing plate the first side hydraulic cylinder, and the end of the first side hydraulic cylinder arranges the first side
Briquetting, the second installing plate is connected the second side hydraulic cylinder, and the end of the second side hydraulic cylinder arranges the second side briquetting.
Described mesa base is provided with a pair Pneumatic non-contact displacement transducer, the respectively first sensing by groove type plate
Device and the second sensor.
The hardness of described first end face briquetting, the second end face briquetting, the first side briquetting and the second side briquetting is less than axle
Hold steel GCr15 hardness.
A kind of measuring method based on above-mentioned line slideway accuracy test device, comprises the following steps:
Step 1, startup first sensor and the second sensor so that it is alignment marble platform upper surface, collect initial value
A0, b0；
Step 2, tested guide rail is positioned in marble platform, starts Z axis straight line slide unit and bi-directional synchronization straight line slide unit
Driving means, make the first laser displacement sensor and the second laser displacement sensor be symmetrically positioned in guide rail both sides, and first swash
The laser rays of Optical displacement sensor and the injection of the second laser displacement sensor is slightly above tested guide rail height, stops Z axis straight line sliding
Platform and the motion of bi-directional synchronization straight line slide unit, start bit displacement sensor, the first laser displacement sensor and the second laser displacement pass
Sensor；
Step 3, mobile tested guide rail the first hydraulic cylinder of startup, the second hydraulic cylinder, the first side hydraulic cylinder and the second side
Hydraulic cylinder makes the first end face briquetting, the second end face briquetting, the first side briquetting and the second side briquetting push down tested guide rail；
Step 4, the driving means of startup Z axis straight line slide unit drive bi-directional synchronization straight line slide unit to move straight down, displacement
Sensor, the first laser displacement sensor and the second laser displacement sensor collect measurement data ci, and di, ei, when moving to set
Stop and returning initial point when putting distance, start first sensor and the second sensor alignment tested guide rail bottom surface, it is thus achieved that measured value
Ai, bi；
Step 5, mobile tested guide rail, to the cross section set, repeat step 3 and step 4；
Step 6, by the above measurement result evaluation height of tested guide rail, the depth of parallelism and arc radius.
Compared with prior art, its remarkable advantage is the present invention: 1) the contactless position that the measurement apparatus of the present invention uses
Displacement sensor measures good stability, and precision is high, and compared to tangent displacement sensor, its vibrated impact is little, and testing stand
Structure is the most relatively easy；2) beat compared with the measuring method of table with traditional-handwork, the method for the present invention eliminate loaded down with trivial details clamping with
Platform maintenance works, and greatly improves measurement efficiency, reduces labor intensity and the learning time of operator；3) present invention
Device is compared other line slideway precision automatic detecting platforms and is reduced space use greatly, is very suitable for automated production inspection
Survey demand.
Below in conjunction with the accompanying drawings the present invention is described in further detail.
Accompanying drawing explanation
Fig. 1 is the population structure schematic diagram of novel linear guide precision test device.
Fig. 2 is the mounting arrangement figure of sensor.
Detailed description of the invention
In conjunction with Fig. 1, Fig. 2, a kind of line slideway accuracy test device of the present invention, including frame 1, frame 1 is arranged flat
Platform 2, platform 2 is provided with Z axis straight line slide unit 3, Z axis straight line slide unit 3 fixedly mounts bi-directional synchronization straight line by keyset 4 sliding
Platform 5, described Z axis straight line slide unit 3 and bi-directional synchronization straight line slide unit 5 are mutually perpendicular to, and bi-directional synchronization straight line 5 is symmetrical arranged a pair and swashs
Optical displacement sensor, the respectively first laser displacement sensor 6 and the second laser displacement sensor 7, described Z axis straight line slide unit 3
Side fixedly mounts displacement transducer 11, institute's displacement sensors 11 perpendicular alignmnet platform 2, described platform 2 by bracing frame 10
Centre arranges the first installing rack 12 and the second installing rack 18, and described first installing rack 12 and the second installing rack 18 are about Z axis straight line
Slide unit 3 is symmetrical, and the first installing rack 12 is connected the first hydraulic cylinder 13, and the end of the first hydraulic cylinder 13 arranges the first end face briquetting
14, described second installing rack 18 is connected the second hydraulic cylinder 19, and the end of the second hydraulic cylinder 19 arranges the second end face briquetting 20；
Both sides, described platform 2 front arrange the first installing plate 15 and the second installing plate 21, and above-mentioned two installing plate is about Z axis
Straight line slide unit 3 is symmetrical, and be wherein connected on the first installing plate 15 first side hydraulic cylinder 16, and the end of the first side hydraulic cylinder 16 sets
Putting the first side briquetting 17, the second installing plate 21 is connected the second side hydraulic cylinder 22, and the end of the second side hydraulic cylinder 22 sets
Put the second side briquetting 23.
Bottom platform 2, groove type plate 24 is provided with a pair Pneumatic non-contact displacement transducer, the respectively first sensing
Device 8 and the second sensor 9.
Described first end face briquetting the 14, second end face briquetting the 20, first side briquetting 17 and the second side briquetting 23 hard
Degree is less than beating steel GCr15 hardness.
A kind of measuring method based on above-mentioned line slideway accuracy test device, comprises the following steps:
Step 1, startup first sensor 8 and the second sensor 9 so that it is alignment marble platform 2 upper surface, collect initial
Value a0, b0；
Step 2, tested guide rail is positioned in marble platform 2, starts Z axis straight line slide unit 3 and bi-directional synchronization straight line is sliding
The driving means of platform 5, makes the first laser displacement sensor 6 and the second laser displacement sensor 7 be symmetrically positioned in guide rail both sides, and
The laser rays of one laser displacement sensor 6 and the injection of the second laser displacement sensor 7 is slightly above tested guide rail height, stops Z axis
Straight line slide unit 3 and the motion of bi-directional synchronization straight line slide unit 5, start bit displacement sensor the 12, first laser displacement sensor 6 and second
Laser displacement sensor 7；
Step 3, start mobile tested guide rail the first hydraulic cylinder the 13, second hydraulic cylinder the 19, first side hydraulic cylinder 16 and the
Two side faces hydraulic cylinder 22 makes the first end face briquetting the 14, second end face briquetting the 20, first side briquetting 17 and the second side briquetting 23
Push down tested guide rail；
Step 4, the driving means of startup Z axis straight line slide unit 3 drive bi-directional synchronization straight line slide unit 5 to move straight down, position
Displacement sensor the 12, first laser displacement sensor 6 and the second laser displacement sensor 7 collect measurement data ci, di, ei, work as fortune
Move and when distance is set, stop and returning initial point, start first sensor 8 and the second sensor 9 is directed at tested guide rail bottom surface, obtain
Obtain measured value ai, bi；
Step 5, mobile tested guide rail, to the cross section set, repeat step 3 and step 4；
Step 6, by the above measurement result evaluation height of tested guide rail, the depth of parallelism and arc radius.
Measured value ai in a certain cross section of tested guide rail is obtained by above-mentioned measurement, bi, ci, di, ei (i=1,2,3,
... n), according to the vertical coordinate in the tested guide rail raceway center of circle with and the measurement average of non-contact displacement transducer 8,9 can try to achieve and lead
Rail height and the depth of parallelism, measure point coordinates according to tested guide rail raceway and obtain tested guide rail raceway radius, and computational methods are as follows:
Assume that measuring point coordinates on tested guide rail raceway arc surface is (Ci, Di) and (Ci, Ei), by circular fitting algorithm
Obtain left and right raceway arc radius RLi and RRi, and raceway center coordinate of arc (LXi, LYi) and (RXi, RYi)；
Movement it is spaced at a certain distance, the measured value of available each measurement position in tested guide rail length range:
RL1, RL2, RL3 ..., RLn；
RR1, RR2, RR3 ..., RRn；
(LX1, LY1), (LX2, LY2) ..., (LXn, LYn)；
(RX1, RY1), (RX2, RY2) ..., (RXn, RYn)；
Then tested guide rail at the height of each measurement position is: hi=0.5 (LYi+RYi)-0.5 (ai-a0+bi-b0)；
The maximum of the height measurements absolute value taking each position is tested guide rail height: max (hi)；
The meansigma methods of the left arc radius of tested guide rail taking each position is tested guide rail left arc raceway radius value:
AVERAGE(RL1+RL2+RL3+...+RLn)；
The meansigma methods of the right arc radius of tested guide rail taking each position is tested guide rail right arc raceway radius value:
AVERAGE(RR1+RR2+RR3+...+RRn)；
The difference of the maxima and minima taking the tested guide rail height measurements of each position is to measure the depth of parallelism of guide rail:
max(hi)-min(hi)；
Measuring from the foregoing, it will be observed that assembly of the invention can test line slideway precision dynamic, test efficiency is high, measurement data
True and reliable.
Claims (4)
1. a line slideway accuracy test device, it is characterised in that include frame [1], frame [1] arranges platform [2] is flat
It is provided with Z axis straight line slide unit [3] on platform [2], Z axis straight line slide unit [3] fixedly mounts bi-directional synchronization straight line by keyset [4]
Slide unit [5], described Z axis straight line slide unit [3] and bi-directional synchronization straight line slide unit [5] are mutually perpendicular to, symmetrical on bi-directional synchronization straight line [5]
A pair laser displacement sensor, the respectively first laser displacement sensor [6] and the second laser displacement sensor [7], institute are set
State Z axis straight line slide unit [3] side to be hung down by bracing frame [10] fixed installation displacement transducer [11], institute's displacement sensors [11]
Straight alignment stage [2], arranges the first installing rack [12] and the second installing rack [18] in the middle of described platform [2], described first installs
Frame [12] and the second installing rack [18] are symmetrical about Z axis straight line slide unit [3], upper first hydraulic cylinder that is connected of the first installing rack [12]
[13], the end of the first hydraulic cylinder [13] arranges the first end face briquetting [14], upper second liquid that is connected of described second installing rack [18]
Cylinder pressure [19], the end of the second hydraulic cylinder [19] arranges the second end face briquetting [20]；
Described platform [2] both sides, front arrange the first installing plate [15] and the second installing plate [21], and above-mentioned two installing plate is about Z
Axle straight line slide unit [3] is symmetrical, wherein the upper first side hydraulic cylinder [16] that is connected of the first installing plate [15], the first side hydraulic cylinder
[16] end arranges the first side briquetting [17], the upper second side hydraulic cylinder [22] that is connected of the second installing plate [21], the second side
The end of face hydraulic cylinder [22] arranges the second side briquetting [23].
Line slideway accuracy test device the most according to claim 1, it is characterised in that grooved is passed through in platform [2] bottom
Plate [24] is provided with a pair Pneumatic non-contact displacement transducer, respectively first sensor [8] and the second sensor [9].
Line slideway accuracy test device the most according to claim 1, it is characterised in that described first end face briquetting
[14], the hardness of the second end face briquetting [20], the first side briquetting [17] and the second side briquetting [23] is less than beating steel GCr15
Hardness.
4. one kind based on the measuring method of line slideway accuracy test device described in claim 1, it is characterised in that include following
Step:
Step 1, startup first sensor [8] and the second sensor [9] so that it is alignment marble platform [2] upper surface, at the beginning of collection
Initial value a0, b0；
Step 2, tested guide rail is positioned in marble platform [2], starts Z axis straight line slide unit [3] and bi-directional synchronization straight line cunning
The driving means of platform [5], makes the first laser displacement sensor [6] and the second laser displacement sensor [7] be symmetrically positioned in guide rail two
Side, and the laser rays that the first laser displacement sensor [6] and the second laser displacement sensor [7] penetrate is high higher than tested guide rail
Degree, stops Z axis straight line slide unit [3] and the motion of bi-directional synchronization straight line slide unit [5], start bit displacement sensor [12], the first laser
Displacement transducer [6] and the second laser displacement sensor [7]；
Step 3, start mobile tested guide rail the first hydraulic cylinder [13], the second hydraulic cylinder [19], the first side hydraulic cylinder [16] and
Second side hydraulic cylinder [22] makes the first end face briquetting [14], the second end face briquetting [20], the first side briquetting [17] and second
Tested guide rail pushed down by side briquetting [23]；
Step 4, the driving means of startup Z axis straight line slide unit [3] drive bi-directional synchronization straight line slide unit [5] to move straight down, position
Displacement sensor [12], the first laser displacement sensor [6] and the second laser displacement sensor [7] collection measurement data ci, di,
Ei, stops and returning initial point when moving to arrange distance, starts first sensor [8] and the second sensor [9] is directed at tested
Guide rail bottom surface, it is thus achieved that measured value ai, bi；
Step 5, mobile tested guide rail, to the cross section set, repeat step 3 and step 4；
Step 6, calculate the height of tested guide rail, the depth of parallelism and arc radius by above measurement result.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610651529.9A CN106247955B (en) | 2016-08-10 | 2016-08-10 | A kind of the linear guide accuracy test device and measurement method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610651529.9A CN106247955B (en) | 2016-08-10 | 2016-08-10 | A kind of the linear guide accuracy test device and measurement method |
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| CN106247955A true CN106247955A (en) | 2016-12-21 |
| CN106247955B CN106247955B (en) | 2018-11-02 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107014318A (en) * | 2017-03-30 | 2017-08-04 | 华东交通大学 | A kind of non-contact steel rail straightness automatic measurement device |
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| CN104438478A (en) * | 2014-11-17 | 2015-03-25 | 汝州郑铁三佳道岔有限公司 | Steel rail shaping device |
| CN205325196U (en) * | 2015-10-24 | 2016-06-22 | 重庆威刚精密钣金有限公司 | More positioning liquid clamping worktable mechenism that expands |
| CN205940469U (en) * | 2016-08-10 | 2017-02-08 | 南京理工大学 | Linear guide precision testing arrangement |
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| RU2151705C1 (en) * | 1998-01-06 | 2000-06-27 | Акционерное общество "Кузнецкий металлургический комбинат" | Rail straightness checking device |
| CN2633936Y (en) * | 2003-06-26 | 2004-08-18 | 上海理工大学附属二厂 | Non contact type two-way rail straight line automatic measurer |
| CN103438851A (en) * | 2013-09-06 | 2013-12-11 | 广东高新凯特精密机械股份有限公司 | Slide block groove center distance detector and measuring method thereof |
| CN104438478A (en) * | 2014-11-17 | 2015-03-25 | 汝州郑铁三佳道岔有限公司 | Steel rail shaping device |
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| CN107014318B (en) * | 2017-03-30 | 2023-07-28 | 华东交通大学 | Non-contact type steel rail straightness automatic measuring device |
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